Enum CryptoError 

#[non_exhaustive]
pub enum CryptoError {
    SrpBadParameters(&'static str),
    SrpProofMismatch,
    Encoding(&'static str),
    Tlv(Tlv8Error),
    Kdf(&'static str),
    Aead,
    Signature,
}

All failure modes of hap-crypto.

Only the variants needed by the current implementation chunk are present; the enum is #[non_exhaustive] so further variants can be added later.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

SrpBadParameters(&'static str)

An SRP-6a parameter was rejected: a public key was zero mod N (an A == 0 / B == 0 abort per RFC 5054), or a field had an invalid length for the active group.

SrpProofMismatch

An SRP proof failed to verify (the peer’s M2 did not match the value computed locally), or the scrambling parameter u was zero — both are SRP-6a abort conditions.

Encoding(&'static str)

A value could not be encoded to, or decoded from, its wire byte form (e.g. a big-endian field that did not fit its fixed length).

Tlv(Tlv8Error)

A response TLV8 body could not be decoded.

Kdf(&'static str)

HKDF key derivation failed (the requested output length exceeded the HKDF-SHA512 maximum of 255 * 64 bytes).

Aead

ChaCha20-Poly1305 authenticated encryption or decryption failed: a tag mismatch on decrypt (wrong key or tampered ciphertext/AAD), or an encryption-time usage error.

Signature

An Ed25519 signature failed to verify, or a public key / signature was malformed (e.g. not a valid curve point).

Trait Implementations

impl Debug for CryptoError

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Display for CryptoError

fn fmt(&self, __formatter: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Error for CryptoError

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0:

use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type-based access to context intended for error reports.

impl From<Tlv8Error> for CryptoError

fn from(source: Tlv8Error) -> Self

Converts to this type from the input type.